Author
Chandra Kanta Ghosh
Bio: Chandra Kanta Ghosh is an academic researcher. The author has contributed to research in topics: Benzopyran & Bicyclic molecule. The author has an hindex of 3, co-authored 5 publications receiving 35 citations.
Papers
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12 citations
TL;DR: This paper showed that the key step in the title reaction id the Diels-Alder addition of 3-acetylchromenone (1) to its acyl-acyl rearranged isomer (9′a) is supported by the formation of 2-salicyloylxanthone (5) from the reaction of (9) with any of the chromenones (1)—(4)
Abstract: That the key step in the title reaction id the Diels–Alder addition of 3-acetylchromenone (1) to its acyl–acyl rearranged isomer (9′a) is supported by the formation of 2-salicyloylxanthone (5) from the reaction of (9) with any of the chromenones (1)—(4)
11 citations
9 citations
TL;DR: The title dihydrofurans (3f, R1= H, Me, and Cl) as discussed by the authors is derived from the α-cyano-ester (1e) and diazomethane, which thermally rearrange to cyclopropanes (4f) in predominantly Z-isomeric form.
Abstract: The title dihydrofurans (3f, R1= H, Me, and Cl), prepared from the α-cyano-ester (1e) and diazomethane, thermally rearrange to the cyclopropanes (4f) in predominantly Z-isomeric form.
3 citations
TL;DR: The title dihydrofurans (3f, R1= H, Me, and Cl) as discussed by the authors is derived from the α-cyano-ester (1e) and diazomethane, which thermally rearrange to cyclopropanes (4f) in predominantly Z-isomeric form.
Abstract: The title dihydrofurans (3f, R1= H, Me, and Cl), prepared from the α-cyano-ester (1e) and diazomethane, thermally rearrange to the cyclopropanes (4f) in predominantly Z-isomeric form.
Cited by
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TL;DR: Compounds 4b-c/5a-c and 9a demonstrated in vitro antitumor activity against P388 leukemia and Antineoplastic activity of the compounds 4b/5b and9a combined with methotrexate was showed using L1210 murine leukemia.
172 citations
TL;DR: In this paper, the authors used catalytic amount of Ti(IV) chloride in MeOH in the presence of NH3 or Et3N to achieve the acetalization of aliphatic and aromatic aldehydes.
78 citations
TL;DR: The chemistry and application of the title aldehyde and some simple derivatives thereof are reviewed in this paper, where the authors propose a simple derivative of the aldehydes, which they call simple aldeheeds.
42 citations
TL;DR: K-10 Montmorillonite mediated condensation of aldehyde 1 with arylamine 2 affords chroman-2,4-dione 5 which gives tricoumarol 8 by acid hydrolysis, 4-arylamino-3-formylcoumarin 11 and 1-benzopyrano[4,3-b]quinoline 12 on heating with POCl3 as discussed by the authors.
41 citations
TL;DR: A survey of the condensations of 3-formylchromone with various active methylene and methyl compounds, e.g. malonic or barbituric acid derivatives, five-membered heterocycles, etc.
Abstract: This review presents a survey of the condensations of 3-formylchromone with various active methylene and methyl compounds, e.g. malonic or barbituric acid derivatives, five-membered heterocycles, etc. The utilisation of the condensation products for the synthesis of different heterocyclic systems, which is based on the ability of the γ-pyrone ring to be opened by the nucleophilic attack is also reviewed. Finally, the applications of microwave irradiation as an unconventional method of reaction activation in the synthesis of condensation products is described and the biological activity of some chromone derivatives is noted.
38 citations